EP2165143B1 - Échangeur thermique - Google Patents

Échangeur thermique Download PDF

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Publication number
EP2165143B1
EP2165143B1 EP08762795A EP08762795A EP2165143B1 EP 2165143 B1 EP2165143 B1 EP 2165143B1 EP 08762795 A EP08762795 A EP 08762795A EP 08762795 A EP08762795 A EP 08762795A EP 2165143 B1 EP2165143 B1 EP 2165143B1
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EP
European Patent Office
Prior art keywords
heat exchanger
tubular body
medium
exchanger according
hollow body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08762795A
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German (de)
English (en)
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EP2165143A1 (fr
Inventor
Veronika Bognarne Fejes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wts Kereskedelmi Es Szolgaltato Kft
Original Assignee
Wts Kereskedelmi Es Szolgaltato Kft
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Application filed by Wts Kereskedelmi Es Szolgaltato Kft filed Critical Wts Kereskedelmi Es Szolgaltato Kft
Priority to SI200830138T priority Critical patent/SI2165143T1/sl
Priority to PL08762795T priority patent/PL2165143T3/pl
Publication of EP2165143A1 publication Critical patent/EP2165143A1/fr
Application granted granted Critical
Publication of EP2165143B1 publication Critical patent/EP2165143B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

Definitions

  • the invention relates to a heat exchanger, in particular for swimming pools with an elongated hollow body with connections to the inlet and outlet of a first and a second medium, in which the first medium is passed in countercurrent or direct current to a second medium through the elongated hollow body and the second medium flows helical pipe which extends longitudinally axially between the end faces of the hollow body, and wherein protrude from the inner hollow body shell a plurality of deflection in the hollow body interior, which deflect the flow of the first medium.
  • Pool heat exchangers are used to heat the bath water as a first medium by means of a heating medium as a second medium.
  • this heat exchangers are used, which consists essentially of a large pipe for bathing water and a heating coil laid therein for a heating medium. As it flows through the two media in their associated pipes, the bath water absorbs the heat from the heating means, which consequently becomes cooler.
  • the heating coil can take any forms within the heat exchanger.
  • the effectiveness of conventional heat exchangers depends inter alia on how large the surface of the heating coil is within the heat exchanger. The larger the surface of the heating coil, the more effective the heat exchanger works. Usually, the heating coil is laid helically within the heat exchanger to increase the surface area.
  • the medium to be heated flows centrally through the spiral heating coil or the medium flows around the heating spiral on the outside.
  • the same principle is also used in instantaneous water heaters in which the heating coil is an electrically heated heating coil.
  • the difference to a heat exchanger in that in a water heater much more heat is delivered to the water flowing through. All named in the description and in the claims embodiments of the heat exchanger according to the invention are in principle transferable to a water heater of the same type.
  • Such a heat exchanger is for example in the DE 100 51 756 B4 described.
  • a heating medium is passed through vertically attached to the heat exchanger housing feed lines in the heat exchanger housing and flows through the heating coil.
  • At the same bath water is guided longitudinally in the heat exchanger, thereby flows around the heating coil and consequently absorbs heat.
  • the flow directions of both media through the heat exchanger are chosen in opposite directions.
  • the US 5,309,987 describes a heat exchanger with baffles, which extend with the exception of a few openings in a circular manner over the inner shell of a cylindrical housing and which are intended to produce a turbulent flow of the medium flowing through. Due to the oblique arrangement of the baffles to the housing longitudinal axis there is the danger that due to occurring turbulence in individual areas accumulation zones arise, from which the used first medium flows only insufficient, so that it can only come to an insufficient heat transfer.
  • the US 1,893,484 describes a heat exchanger having a cylindrical housing, on whose inner shell spirally arranged vanes are provided.
  • the heat exchanger according to claim 1 which is characterized in that the deflecting elements in alternating sequence of each opposite hollow body sides in the hollow body interior to the Area of the helical tube protrude so that they end between two coils and that the hollow body inner shell has a plurality of sections concave shaped constrictions.
  • the heat exchanger according to the invention is particularly intended to heat pool water, but it can also heat other liquids.
  • the heat exchanger could be used to heat aquarium water.
  • the heat exchanger according to the invention is in principle also suitable for use as a cold exchanger.
  • the effect of the heat exchanger according to the invention is, in particular, that the existing deflecting direct the hot water to be heated in the direction of the helical pipe. Furthermore, the flow rate of the first medium (service water) should be controlled so that along the helical pipe snake a longer residence time and thus a greater heat transfer is achieved.
  • the inflowing first medium is guided by the deflecting element selectively between the helical tubes, wherein in the region of the constriction of the elongated hollow body, a flow acceleration and in the lying between the constrictions extension regions of the hollow body interior pressure relaxations and thus lower flow velocities are generated.
  • two to three 360 ° turns of the helical tube are arranged between two adjacent deflection elements. It has been found that this optimization creates the greatest possible heat transfer between the helical tube and the first medium.
  • the configuration of the helical tube serves as a corrugated tube, which has a larger surface area in contrast to a smooth-walled tube.
  • the hollow body inner shell has a smooth surface, whereby deposits and unwanted turbulence of the first medium flowing past there are avoided.
  • the deflection elements are flat bodies with a preferably concavely curved inner edge.
  • the elongated hollow body preferably including the deflecting elements made of plastic, in particular polyamide.
  • the plastic housing can be produced in particular by injection molding.
  • the elongated hollow body consists of several, one another plug-in pieces of pipe which are detachably connected to each other.
  • a modular heat exchanger is created, which consists of any number of individual pieces of heat-resistant and especially corrosion-resistant plastic with high insulation and high security against calcification.
  • its housing has on its outer jacket protruding tabs with an opening for the passage of a fastening screw.
  • a bracket is provided for fastening the elongated hollow body to a wall, the ends of which are bent by 180 ° and viewed in a plan view arranged congruently arranged bores for the passage of a bolt or screw shank.
  • the 180 ° bend of the strap ends makes it possible to tighten the bolt or the screw in such a way that a compressive stress is built up in the U-shaped bent part, which loosens the screw connection from the outset.
  • the bracket has a concave-shaped central portion, which preferably has the same curvature profile as the elongated hollow body present there.
  • the deflecting elements are individual wall pieces either vertically or inclined by 2 ° to 3 ° relative to the vertical, projecting into the interior of the housing. With an inclination relative to the vertical, the angle between the direction of flow of the first medium and the deflecting elements is thus approximately 88 °.
  • the deflecting elements protrude in alternating sequence from respective opposite sides of the hollow body interior by an edge dimension of 1/3 to 1/7, preferably 1/5 of the inner diameter of the hollow body in the hollow body interior.
  • the hollow body inner casing has at least partially a wave-shaped profile in the direction of the longitudinal axis, the constrictions of the diameter preferably amounting to 5% to 10% of the interior of the hollow body.
  • the connections for the first and second medium are arranged frontally in a preferred embodiment.
  • the heat exchanger consists of several individual elements, whereby the length of the heat exchanger can be selected as desired, since any number of elements can be connected together are. Each of the elements has a fastening tab, so that even larger heat exchanger housing can be securely fixed.
  • the attachment of the heat exchanger can be selected both on an existing masonry, ie a wall or as a suspension on a ceiling as well as for attachment to a pallet for integration within a system. If one uses the heat exchanger for swimming pool water heating, the heating can be done both by heating water and by solar heat.
  • the heating medium as a second medium is passed through a rib-shaped helical tube.
  • This helical pipe serves as a heating water pipe, which is flowed vertically and horizontally by the first medium in the heat exchanger, so that a uniform heat extraction is possible.
  • the convex-concave design of the heat exchanger housing with internal deflection elements extends the residence time of the first medium in the heat exchanger housing, which ensures greater heat transfer.
  • the heating medium can be cooled more, which results in a lower heat loss on the return path and thus a saving of heating energy.
  • the helical Thompsonrippenrohre are preferably made of highly corrosion-resistant and pressure-resistant stainless steel and screwed to the front side with a double nipple.
  • the preferably selected deflecting elements protrude by 20mm to 30mm, preferably 25mm long in the hollow body inside, namely at an angle of 90 ° or slightly opposite the direction of flow by 2 ° to 3 ° inclined into the heat exchanger inside.
  • the deflection elements are circular segment-like and have a concave upper edge, which, however, can also be shaped differently.
  • the medium to be heated is passed several times to the centrally arranged heating coil, the helical pipe.
  • the successive constrictions and expansions in the housing interior also cause an alternating compression and relaxation of the flowing first medium with the result that the residence time of the first medium in the area of the heating coil increases and thus the heat output is improved.
  • the oval shape of the heat exchanger allows high internal stresses without material stresses.
  • the deflection elements, which are integrated on the narrow sides, also improve the statics of the heat exchanger housing.
  • Fig. 1 a shows a heat exchanger 10 with an integrated helical pipe 11 as a heating coil.
  • hot water is provided as the heating means, which is passed through the helical pipe.
  • the helical pipe may have a smooth surface, but preferably it is designed as a corrugated tube.
  • the helical pipe 11 is fixed by means of a double nipple 13, 13 'in each case end face on the heat exchanger housing.
  • the first and second medium flow in opposite directions.
  • the heat exchanger 10 has a cross-sectionally oval housing.
  • the direction of flow of the first medium is represented by the arrow 14 and the direction of flow of the second medium by the arrow 15.
  • the heat exchanger has two end pieces 16, 16 'and two center pieces 17, 17', which are assembled together with the end pieces to form a heat exchanger 10.
  • the end pieces and the center pieces 16, 16 ', 17, 17' are each plugged together, with adjacent parts being fixed via a connection consisting of bolts and screws.
  • the middle pieces 17, 17 'deflecting elements 18 which project vertically into the hollow body interior.
  • the deflecting element 18 is located in the direction of flow 14 in the region in which the inner diameter tapers. In the flow direction considered lying on the opposite hollow body inner shell side at a distance a second deflecting 18.
  • the deflecting elements protrude so far into the planteicagepurinnere inside that they end in the region of the helical tube 11. Between two adjacent deflecting elements arranged on opposite sides are two to three turns of the helical pipe 11.
  • the bracket 32 has a concave shaped central portion 38 whose shape is adapted to the outer contour or the respective radius of curvature of the heat exchanger.
  • a water heater 41 which has electrically heated heating coils 42 which are mounted on the left housing part.
  • the illustrated embodiment comprises only one central element in which two deflecting elements are arranged. Due to the front side arranged power connection, the water connection 44 is not the front side, but the side of the water heater 41 arranged. Furthermore, a possible circular flow pattern 45 of the water to be heated is shown. Of course, a wave-shaped flow course is conceivable, as it is, for example, in Fig. 1c is shown.
  • Fig. 5 shows an exemplary embodiment of the deflecting elements 18, which are shown hatched.
  • the deflecting elements form a segment which extends from the jacket of the heat exchanger inwards. From the lowest point, the height of the deflection element, based on the largest (here vertically arranged) diameter of the heat exchanger is between 1/5 and 1/4.
  • the upper edge of the deflecting elements 18 is concave.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (15)

  1. Echangeur de chaleur (10), en particulier pour piscines, comprenant un corps creux allongé ayant des raccords pour l'arrivée et l'évacuation d'un premier milieu et d'un second milieu, dans lequel ledit premier milieu est mené en contre-courant ou en courants parallèles et de même sens à travers le corps creux allongé vers un second milieu et ledit second milieu passe à travers un tube hélicoïdal (11) qui s'étend dans le sens de l'axe longitudinal entre les faces frontales du corps creux, et dans lequel plusieurs éléments déflecteurs (18) qui dévient le courant du premier milieu font saillie de la surface latérale intérieure du corps creux dans le volume intérieur du corps creux, caractérisé par le fait que lesdits éléments déflecteurs (18) font saillie en une succession alternante, à partir de faces de corps creux respectivement opposées, dans le volume intérieur du corps creux jusque dans la zone du tube hélicoïdal (11) de manière à se terminer entre deux hélices, et que la surface latérale intérieure du corps creux présente par sections plusieurs rétrécissements concaves (17).
  2. Echangeur de chaleur selon la revendication 1, caractérisé par le fait que ledit corps creux allongé est ovale ou ronde-allongée en coupe transversale, les éléments déflecteurs (18) étant disposés de préférence sur les petits côtés de l'ovale.
  3. Echangeur de chaleur selon la revendication 1 ou 2, caractérisé par le fait que deux à trois spires de 360° du tube hélicoïdal (11) sont disposées entre deux éléments déflecteurs (18) voisins.
  4. Echangeur de chaleur selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que le tube hélicoïdal (11) est un tube ondulé.
  5. Echangeur de chaleur selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que la surface latérale intérieure du corps creux présente une surface lisse.
  6. Echangeur de chaleur selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que les éléments déflecteurs (18) sont des corps plats qui, de préférence, présentent une arête intérieure courbée de manière concave.
  7. Echangeur de chaleur selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que le corps creux allongé, de préférence les éléments déflecteurs y compris, est réalisé en matière plastique, en particulier en polyamide, de préférence encore ledit corps creux allongé étant constitué par plusieurs tronçons de tube aptes à être emboîtés les uns dans les autres et reliés entre eux de manière amovible.
  8. Echangeur de chaleur selon l'une quelconque des revendications 1 à 7, caractérisé par le fait que le corps creux allongé présente des languettes (301) qui font saillie de sa surface latérale extérieure et présentent une percée pour faire passer une vis de fixation (31).
  9. Echangeur de chaleur selon la revendication 8, caractérisé par le fait que, pour la fixation du corps creux allongé sur un mur (32), on prévoit un étrier (39) dont les extrémités (33, 34) sont courbées à un angle de 180° et présentent, vues de dessus, des trous disposés de façon congrue pour le passage d'une tige d'un boulon ou d'une vis.
  10. Echangeur de chaleur selon la revendication 9, caractérisé par le fait que ledit étrier (39) présente une partie médiane (38) de forme concave qui présente, de préférence, le même rayon de courbure ou bien la même allure de courbure que ledit corps creux allongé (30).
  11. Echangeur de chaleur selon l'une quelconque des revendications 1 à 10, caractérisé par le fait que les éléments déflecteurs (18) sont réalisés de pièces de paroi individuelles se projetant dans le volume intérieur du corps creux soit verticalement soit à une inclinaison comprise entre 2° et 3° par rapport à la verticale.
  12. Echangeur de chaleur selon la revendication 11, caractérisé par le fait que lesdits éléments déflecteurs font saillie en une succession alternante, à partir de faces respectivement opposées, dans le volume intérieur du corps creux, de préférence d'une dimension de bord comprise entre 1/3 et 1/7, de préférence encore de 1/5, du diamètre intérieur du corps creux.
  13. Echangeur de chaleur selon l'une quelconque des revendications 1 à 12, caractérisé par le fait que la surface latérale intérieure du corps creux présente, dans le sens de l'axe longitudinal, au moins en partie un profil ondulé, les rétrécissements du diamètre représentant de préférence entre 5 % et 10 % de l'intérieur du boîtier.
  14. Echangeur de chaleur selon l'une quelconque des revendications 1 à 13, caractérisé par le fait que les raccords pour les premier et second milieux sont disposés sur la face frontale.
  15. Echangeur de chaleur selon l'une quelconque des revendications 1 à 14, caractérisé par le fait que le tube hélicoïdal (11) est un serpentin réchauffeur électriquement chauffant ou que ledit échangeur de chaleur est réalisé en tant que chauffe-eau instantané.
EP08762795A 2007-07-17 2008-06-02 Échangeur thermique Active EP2165143B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200830138T SI2165143T1 (sl) 2007-07-17 2008-06-02 Izmenjevalnik toplote
PL08762795T PL2165143T3 (pl) 2007-07-17 2008-06-02 Wymiennik ciepła

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007033166A DE102007033166A1 (de) 2007-07-17 2007-07-17 Wärmetauscher
PCT/IB2008/001457 WO2009010834A1 (fr) 2007-07-17 2008-06-02 Échangeur thermique

Publications (2)

Publication Number Publication Date
EP2165143A1 EP2165143A1 (fr) 2010-03-24
EP2165143B1 true EP2165143B1 (fr) 2010-10-27

Family

ID=39874178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08762795A Active EP2165143B1 (fr) 2007-07-17 2008-06-02 Échangeur thermique

Country Status (14)

Country Link
US (1) US20100181045A1 (fr)
EP (1) EP2165143B1 (fr)
CN (1) CN101796364B (fr)
AT (1) ATE486259T1 (fr)
DE (2) DE102007033166A1 (fr)
DK (1) DK2165143T3 (fr)
ES (1) ES2355016T3 (fr)
HK (1) HK1146648A1 (fr)
PL (1) PL2165143T3 (fr)
PT (1) PT2165143E (fr)
SI (1) SI2165143T1 (fr)
UA (1) UA97285C2 (fr)
WO (1) WO2009010834A1 (fr)
ZA (1) ZA201000973B (fr)

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CN102200401B (zh) * 2010-03-26 2012-08-15 张俊吉 换热器
CN102636049B (zh) * 2010-03-26 2013-05-15 张俊吉 换热器
DE102010034112A1 (de) 2010-08-12 2012-02-16 Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) Interner Wärmetauscher für eine Kraftfahrzeug-Klimaanlage
JP2013022433A (ja) * 2011-07-15 2013-02-04 Ayako Nakagawa 洗濯排水の熱回収装置
US9322571B2 (en) 2011-11-11 2016-04-26 Lv Dynamics Llc Heating system having plasma heat exchanger
AU2013284326B2 (en) * 2012-06-29 2017-07-27 Waterco Limited Heat exchanger
US9562703B2 (en) 2012-08-03 2017-02-07 Tom Richards, Inc. In-line ultrapure heat exchanger
KR101249721B1 (ko) * 2012-09-05 2013-04-02 주식회사 화승알앤에이 열교환용 이중관
CN102980422B (zh) * 2012-12-18 2015-06-10 张周卫 低温循环甲醇冷却器用缠绕管式换热器
JP6833255B2 (ja) 2013-11-18 2021-02-24 ゼネラル・エレクトリック・カンパニイ 一体型チューブインマトリックス熱交換器
NO20140389A1 (no) * 2014-03-25 2015-09-28 Vetco Gray Scandinavia As Undersjøisk varmevekslerinnretning og en fremgangsmåte for å forbedre graden av varmeoverføring i en undersjøisk varmeveksler
CN105865229A (zh) * 2016-04-15 2016-08-17 马怡鑫 一种螺旋式换热器
CN110207509B (zh) * 2019-04-14 2021-05-07 徐州赛孚瑞科高分子材料有限公司 一种煤矿井下专用低温液体换热装置

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Also Published As

Publication number Publication date
DE102007033166A1 (de) 2009-01-22
ES2355016T3 (es) 2011-03-22
PT2165143E (pt) 2011-01-28
UA97285C2 (uk) 2012-01-25
CN101796364B (zh) 2011-12-14
SI2165143T1 (sl) 2011-02-28
HK1146648A1 (en) 2011-06-24
WO2009010834A1 (fr) 2009-01-22
US20100181045A1 (en) 2010-07-22
DK2165143T3 (da) 2011-02-14
CN101796364A (zh) 2010-08-04
ZA201000973B (en) 2010-11-24
PL2165143T3 (pl) 2011-06-30
DE502008001668D1 (de) 2010-12-09
ATE486259T1 (de) 2010-11-15
EP2165143A1 (fr) 2010-03-24

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